Linux是开放的源代码，它具备了unix的全部特征，与POSIX标准兼容。

Linux操作系统，不仅广泛与应用于PC、服务器，还广泛地用于手机、PDA等高端嵌入设备。

Linux综合了unix主要派生系统(如SysV、BSD)的先进技术，所以，Linux操作系统上能运行原Unix系统的各种应用程序，同时，还存在大量的应用程序开放源代码供开发者使用。

Linux内核代码几乎是每个软件工程师必读的-Linux is open source code, which possesses all the features of unix, and POSIX standards-compliant.

Linux operating system, not only widely and used in PC, servers, is also widely used in mobile phones, PDA and other high-end embedded devices.

Linux combines the main derived unix systems (such as SysV, BSD) of advanced technology, so, Linux operating system can run the original Unix system, a variety of applications at the same time, there is also a large number of applications for the open-source developers to use.

Linux kernel code is almost required reading for every software engineer